If you get the same behaviour in Wayland sessions then it's probably not
a Xorg bug. Maybe mutter or maybe the kernel.
** Package changed: xorg-server (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: Incomplete => New
** Also affects: mutter (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1802573
Title:
Thinkpad x220 - Unable to use 2560x1440 external display connected via
DisplayPort due flashing black screen
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1802573/+subscriptions
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